22 moves?! Okay, you win...
That being said, try to take comfort in the fact that you've done this many times before. I know it can be scary, not knowing how you will react to something big like that. Like I said earlier, the thought of losing my mom terrified me. Whether it's a death or birth or major relocation, these kinds of life stressors can take their toll.
It sounds like you're doing quite a bit to prepare yourself. That's great news about the high school reunion. Maybe you could reconnect with some old friends out there.
That's really neat -that you used to live in Maine. I used to work in Maine, lived on the NH Seacoast. Now I'm about 2 hours away from the coast and I miss it. But we're "home" here, so it's all good.